How do you clean up an html file?
For example, this file has one too many empty line between the div tags. I would like cleanup to leave only one blank line there.
<html> <body> <div> foo </div> <div> abc </div> </body> </html>
What I tried in my emacs prelude
M-x help d PATTERN Show a list of functions, variables, and other items whose documentation matches the PATTERN (a list of words or a regexp). entered 'clean html'